#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<string>
using namespace std;
#include<assert.h>
#include"string.h"


int main()
{
	try
	{
		xb::test_string7();
	}
	catch (const exception& e)
	{
		cout << e.what() << endl;
	}

	return 0;
}


